An Independent Inventor came to Focus with a sketch of a toothbrush that had a replaceable toothpaste cartridge. We took the customers rough sketches and input and designed the product. Using Solidworks CAD software Focus created all Production Drawings. The product included an eject button and a toothpaste level indicator dial as well as a knob for pushing the toothpaste to brush. The housing was designed with an anti-bacteria plastic as well as a sure grip rubber over mold handle. We then built, assembled, and tested prototypes to validate design.